Black Obsidian 2x4mm Heishi - 15-16 Inch Large Hole Beads The inclusions can be so

The inclusions can be so dense as to make the clear Quartz nearly opaque

Mookaite is formed by the ancient skeletal remains of radiolaria

Rose Quartz is a silicon dioxide crystal and one of the most common varieties of the Quartz family

Tourmaline occurs in nearly every color in the rainbow and its name derives from “turmali

and it constitutes a major portion of many of the earth's rocks

Black Obsidian 2x4mm Heishi - 15-16 Inch Large Hole Beads The inclusions can be soEssentially a volcanic glass, Obsidian ranges in color from opaque black, to green, brown, mahogany, black with rainbow colors, black with snowflake patterns, black with a golden sheen, and translucent black (Apache Tears)